I see a lot of good argument for being able to record an officer on duty. But I am not familiar with the against arguments. One i hear is "privacy of the office

I see a lot of good argument for being able to record an officer on duty. But I am not familiar with the against arguments. One i hear is "privacy of the officer" but it does not make a lot of sense in this context. What are they doing on duty that needs to be a secret? So my question is, what made them think that it was not okay to be recorded or what are strong arguments that are still valid? What situation would you say is an exception where people should not record the cops? would it get in the way of investigation sometimes maybe? Tangentially, what do you think about drones that record stuff? I saw a few videos on you tube where drones were following cops around. Should there be a distinction between cell phone recording and drone recording? Could the officer claim they are being harassed? Thanks.